What was John F. Kennedy significant shortcomings

Most historians agree that Kennedy's biggest mistake was that he did not support the attempt to overthrow the Cuban regime.

Explanation:

According to many historians, JFK has not had many politically wrong moves during his presidential career. Still, many agree that his biggest mistake is the fact that he did not support the rebels fighting Castro in Cuba. An episode in history known as the "Pig Invasion" is a rebel action against a regime in Cuba in which Kennedy omitted to provide air assistance to the rebels. The consequences were the growing distrust of the Cuban system against the United States, and the reflection of hostility persists to this day. Cuba will eventually become a stronghold of the Soviet Union, and the event itself has, according to some, harmed the image of the United States in its own right.

Concerning internal failure, it is possible to point out the president's slowness to become more involved in the civil rights movement. After the Alabama reluctance, the president became more engaged in the issue, and civil rights were implemented in the constitution after his death. However, the fact is that he initiated the move during his lifetime.

the answer is d. tariffs were raised by america's trading partners after the smoot-hawley tariff act, decreasing exports, and declining job rates.